textlint-rule-no-double-negative-ja/lib/matchTokenStream.js

二重否定をチェックするtextlint rule

// LICENSE : MIT
"use strict";
/**
 * expectShape
 * [expectShape | expectShape]
 * にどれかにマッチするならtrueを返す
 * @param {*} token
 * @param {*|*[]} expectShape
 *  orでマッチしたい場合は配列を渡す
 * @returns {boolean}
 */

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = expectTokenStream;

function matchToken(token, expectShape) {
  if (Array.isArray(expectShape)) {
    return expectShape.some(singleExpectShape => matchToken(token, singleExpectShape));
  }

  return Object.keys(expectShape).every(key => {
    var actualValue = token[key]; // 値は複数の場合もある

    var expectedValues = Array.isArray(expectShape[key]) ? expectShape[key] : [expectShape[key]];
    return expectedValues.some(expectedValue => {
      return actualValue === expectedValue;
    });
  });
}

function expectTokenStream(tokenStream) {
  var currentTokenPosition = 0;
  var tokenCount = tokenStream.length;
  return token => {
    var expectedToken = tokenStream[currentTokenPosition];

    if (matchToken(token, expectedToken)) {
      currentTokenPosition += 1;
    } else {
      // restart
      currentTokenPosition = 0;
    } // match


    if (currentTokenPosition === tokenCount) {
      // match -> reset
      currentTokenPosition = 0;
      return true;
    }

    return false;
  };
}
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